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Understanding how fatigue contributes to rolling bearing failure
Fatigue is one of the primary causes of rolling bearing failure. In this article, Dr Steve Lacey, Engineering Manager at Schaeffler UK, describes the various types of fatigue and what measures can be taken to correct any problems that occur.
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Alarm management systems: the benefits of third party software
When it comes to selecting an enterprise-wide alarm management system, businesses should consider the pros and cons of a third party specific alarm management tool over a DCS vendor’s offering, says Jason Cook, Product Manager at MAC Solutions.
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New revisions to IEC 61496-1 (EN 61496-1) explained
The capabilities of light curtains and other optically-based ESPE (electro sensitive protective equipment or devices) have been something of a grey area in the past when assessing SIL levels to IEC 62061 or performance levels to ISO 13849. Now substantial revisions to IEC 61496 (EN 61496) at the start of 2014 are attempting to put that right. Dr Martin Kidman, a Safety Specialist at SICK (UK), explains how the changes affect the selection of appropriate protective devices in relation to the required performance level of the safety function.
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EN ISO 14119:2013, new standard for guard interlocking devices
EN ISO 14119:2013, 'Safety of machinery - Interlocking devices associated with guards - Principles for design and selection', has been harmonised to the Machinery Directive 2006/42/EC and will supersede its predecessor, EN 1088, on 30 April 2015. David Collier CMSE, Business Development Manager with Pilz Automation Technology, highlights the main changes to be aware of.
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Selecting roller table motors for the harshest applications
Roller tables used in modern steel mills tend to use individually driven rollers rather than a single group drive such as a chain or belt. Roller tables require special motors with a high dynamic constant, plus a robust overall design to withstand the extreme heat and dirt of a steel mill. Such motors are used throughout the rolling mill on general conveying duties, but on the reversing mill and associated approach tables, the operating duties are extreme with constant stop/starts and instant reversal of directions. Ananda Majumdar of Regal reviews the key points of this critical technology.
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Mechanical Design Engineering Handbook, book review
Jon Severn, the Editor of MachineBuilding.net, reviews Mechanical Design Engineering Handbook, 1st Edition, by Peter RN Childs.
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Regeneration of energy made simple with DC drives
The ability of DC drives to regenerate energy under braking without the need for complex intermediate storage or power bridges is just one of the benefits of DC technology, says Gary Keen, sales director at Sprint Electric.
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Efficient integration of the drivetrain in any industry
Depending on the industry, environment and requirements of any given application, there are many different methods of transferring power from mains supply to machine. But no matter what the layout of the drivetrain, there will always be some approaches that offer smoother integration and better efficiency than others. Bauer supplies electro-mechanical application systems that guarantee every component is hand-picked for the application, and integrated as efficiently as possible.
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